二羟基菲,荧蒽和pyr衍生物是相应母体多环芳烃(PAH)细菌分解代谢中的中间体。二羟基物质的开环,随后进行一系列的酶催化反应,生成代谢物,这些代谢物进入克雷布斯循环,最终产生二氧化碳和水。描绘这些途径并将其用于有用目的的一个复杂之处在于,最初的酶促加工过程会产生多种具有多种开环可能性和产物的二羟基PAH。作为解决该问题的系统努力的一部分,合成了八种二羟基物质,并将其表征为二甲氧基或二乙酸酯衍生物。在菲的菲降解途径中用两种双加氧酶检查了几种二羟基化合物。Vanbaalenii分枝杆菌PYR-1。PhdF处理了一个3,4-二羟基菲,其k cat / K m为6.0×10 6 M -1 s -1,该值与该途径中PhdF的注释功能一致。PhdI处理的k cat / K m为3.1×10 5 M -1 s -1的1-羟基-2-萘甲酸,也与该途径中的拟议作用一致。这些观察结果为vanbaaleni
A novel method for the synthesis of substituted naphthalenes and phenanthrenes
作者:Charles B. de Koning、Joseph P. Michael、Amanda L. Rousseau
DOI:10.1039/a908361h
日期:——
Heating of o-allyl-substituted acylbenzenes with potassium tert-butoxide in DMF with simultaneous irradiation from a high-pressure mercury lamp afforded substitutednaphthalenes, including arylnaphthalenes. 2-(o-Tolyl)-substituted aromatic aldehydes were converted into phenanthrenes under the same conditions. A formal synthesis of tanshinone I has also been achieved.
Reductive dicarbonyl coupling with low-valent titanium reagents: a new entry to phenanthrene alkaloids
作者:Julio A. Seijas、Angel R. de Lera、M. Carmen Villaverde、Luis Castedo
DOI:10.1039/c39850000839
日期:——
A new and direct synthesis of phenanthrenealkaloids using a low-valenttitaniumreagent is described which is compatible with ethoxycarbonyl as the N-protecting group.
描述了使用低价钛试剂的新的直接合成菲生物碱的方法,该试剂与乙氧基羰基作为N-保护基团相容。
Visible-Light-Mediated Synthesis of Phenanthrenes through Successive Photosensitization and Photoredox by a Single Organocatalyst
作者:Tanumoy Mandal、Samrat Mallick、Nidhi Kumari、Suman De Sarkar
DOI:10.1021/acs.orglett.2c03612
日期:2022.11.18
An efficient approach for the synthesis of phenanthrene scaffolds by utilizing the dual catalytic activity of an organo-photocatalyst is documented. The controlled cascade transformation proceeds via in situ diazotization followed by olefin isomerization and subsequent arene radical generation through photoreduction. The overall process demonstrates both the photosensitization and photoredox properties